Appendix G: Subwoofer Setup - Bryston SP3 Owner's Manual

APPENDIX G: SUB-WOOFER SETUP continued
Subwoofer setup screen differs between the situation when the Front speakers were declared as
"Small" (above) versus when the Front were declared "Large" (below):
The difference deals with the Xtra Bass feature and is described in Section 4.
3. Subwoofer in 2-channel Bypass mode.
Two channel bypass mode is selected by the front panel button labelled "2 CH. BYPASS" and applies
to analog stereo (left and right only) input signals. The signals are bypassing the Digital Signal
Processor (DSP) and are routed only through analog preamps and analog volume control circuit. In
this mode DSP can be completely disabled when the "in2BYPASS" option is OFF, or it can be used to
extract the bass contents of the analog L and R input channels and output it through the Subwoofer
sockets. When "in2BYPASS" option is ON then the cross-over frequency used for bass extraction is
the one set up in:
SOURCE SETUPCROSSOVER FcFRONT, while the Subwoofer Volume Level correction is
the one set up in:
SOURCE SETUPSPEAKR LEVELSUB
4. Xtra Bass feature.
If Subwoofer is present and the Front speakers are declared as Large then bass contents will be
streamed through the Front speakers while only LFE will be reproduced through the Subwoofer. In
this case, in order to make the subwoofer reproduce bass from the Front speakers as well, in addition to
being reproduced by the Front speakers, Xtra Bass option can be enabled. Xtra Bass option has no
effect and is disabled when the Front speakers are declared Small or when no subwoofer is present.
Xtra Bass option has no effect on LFE reproduction.
With the Front speakers Large, Xtra Bass option can be enabled by setting the following parameter to
ON:
SOURCE SETUPSUBWOOFERXTRA BASS
In addition, the mixing volume level of the bass contents can be adjusted by this parameter:
SOURCE SETUPSUBWOOFERLEVEL
The adjustment range is -20dB to 0dB. The LEVEL parameter applies only to Subwoofer in Xtra
Bass (on top of the normal Subwoofer Level correction from SOURCE SETUPSPEAKR LEVEL).
It is disabled and not applied if Extra Bass is not ON.
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LFE will always be reproduced only though either the Subwoofer if present regardless of the size of the Front speakers,
or through the Front speakers if Subwoofer is not present and the Front speakers are Large.
Subwoofer setup screen (Large speakers)
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Sub-Woofer Setup Guide Pg. 2 of 2